| Vowels | Country | % Correct |
|---|---|---|
| OO | Togo | 84%
|
| OUOEA | South Korea | 80%
|
| OUAIA | South Africa | 76%
|
| OAIUE | Mozambique | 75%
|
| OAY | Norway | 74%
|
| OAO | Monaco | 73%
|
| OOEA | North Korea | 73%
|
| OUUA | South Sudan | 70%
|
| OIAAEEOIA | Bosnia and Herzegovina | 69%
|
| OEEO | Montenegro | 69%
|
| OAA | Botswana | 67%
|
| OIIAEUI | Dominican Republic | 67%
|
| OAEOIA | North Macedonia | 67%
|
| OOA | Moldova | 62%
|
| OOOIA | Solomon Islands | 62%
|
| OEIA | Slovenia | 59%
|